`r.destroy` can defer exec in `runner.run` method.
`r.destroy` can defer exec in `runner.run` method.

Signed-off-by: Xiao YongBiao <d6147a3b437ac802b8c2e59604d3537c16c0db9f@gmail.com>

mheon/runc,rhatdan/runc,mikebrow/runc,xiaochenshen/runc,kolyshkin/runc,kolyshkin/runc,dqminh/runc,adrianreber/runc,opencontainers/runc,rhatdan/runc,mheon/runc,dqminh/runc,xiaochenshen/runc,justincormack/runc,mYmNeo/runc,mYmNeo/runc,opencontainers/runc,dqminh/runc,rhatdan/runc,mikebrow/runc,xiaochenshen/runc,mikebrow/runc,estesp/runc,estesp/runc,estesp/runc,opencontainers/runc,adrianreber/runc,justincormack/runc,kolyshkin/runc,justincormack/runc,kolyshkin/runc,dqminh/runc,opencontainers/runc,mYmNeo/runc,adrianreber/runc,mheon/runc,rhatdan/runc